tomato psyllid

noun

: a psyllid bug (Paratrioza cockerelli) that is a pest on tomatoes and potatoes in parts of the western U.S.

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now